Het QDR SRAM Consortium, bestaande uit Cypress Semiconductor, IDT en Micron Technology, heeft aangekondigd dat de eerste Quad Data Rate SRAM chips worden gesampled. QDR SRAM heeft een data rate tot 333MHz en kan kan onder meer toegepast worden in snelle switches en routers (thanks D3ton4tor voor de tip):
Demand is growing rapidly for memories optimized for high bandwidth. The relentlessly expanding amount of information that travels over the Internet is creating the need for more and faster systems capable of routing and switching data across the globe. Higher-bandwidth memory is a requirement for these systems, and the QDR standard is specifically designed to address this need.The development of the unique QDR SRAM architecture included extensive input from networking industry leaders. The devices are designed to greatly increase memory bandwidth compared to existing SRAM solutions in applications such as switches and routers, and will typically be used for look-up tables, linked lists and controller buffer memory.
The popular Zero Bus Turnaround™ (ZBT®) and No Bus Latency (NoBL™) products meet the needs of today's communications systems operating between 66 MHz and 200 MHz. Targeting emerging systems operating beyond 333 MHz data rates, QDR SRAMs have dedicated input and output ports that independently run at double data rate (DDR), resulting in four data items per clock cycle. Depending upon the application, the QDR SRAMs more than double the SRAM bandwidth. The dedicated input and output ports free designers from grappling with bus contention issues.
Each vendor designs and manufactures the devices in its own technology and fabrication facilities, and will deliver products according to its own internal development schedules. All expect to make specific product availability announcements in 2000. More information on the QDR SRAM technology can be obtained at www.QDRSRAM.com.
